Cover for a heat exchanger



FIG. 1 is a front, top and right side perspective view of a cover for aheat exchanger showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof, a left side being amirror image thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a cover for a heat exchanger, as shown anddescribed.